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CBSE Questions for Class 10 Maths Real Numbers Quiz 2 - MCQExams.com

The number of possible pairs of number, whose product is 5400 and the HCF is 30 is
  • 1
  • 2
  • 3
  • 4
3550 has a non-terminating decimal expansion.
  • True
  • False
According to Euclid's division algorithm, HCF of any two positive integers a and b with a>b is obtained by applying Euclid's division lemma to a and b to find q and r such that a=bq+r, where r must satisfy
  • 1<r<b
  • 0<r<b
  • 0r<b
  • 0<rb
  • Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
  • Both Assertion and Reason are correct, but Reason is not the correct explanation for Assertion.
  • Assertion is correct, but Reason is incorrect.
  • Assertion is incorrect, but Reason is correct.
The decimal representation of 931500 will be:
  • terminating
  • non-terminating
  • non-terminating, repeating
  • non-terminating, non-repeating
The rational number which can be expressed as a terminating decimal is:
  • 16
  • 112
  • 115
  • 120
State True or False.
258 is an irrational number.
  • True
  • False
The HCF of 256,442 and 940 is
  • 2
  • 14
  • 142
  • None of these
Which of the following are not rational?
  • 23
  • 16
  • π
  • 2+25
Classify the following numbers as rational or irrational : 25
  • Irrational number
  • Rational number
  • Less Data
  • None of the above
State TRUE or FALSE
(2+3)(23) is Irrational
  • True
  • False
State TRUE or FALSE 
(2+3)2 is Irrational
  • True
  • False
Every irrational number is:
  • a surd
  • a prime number
  • not a surd
  • none
HCF of the two numbers =
  • Product of numbers + their LCM
  • Product of numbers - their LCM
  • Product of numbers \times their LCM
  • Product of numbers \div their LCM
  • Answer required

20 is written as the product of primes as :
  • {2\times 5 }
  • {2\times 2\times 3\times 5}
  • {2\times 2\times 5}
  • {2\times 2\times 3}
Without actually performing the long division, state whether the following rational number will have a terminating decimal expansion or non -terminating decimal expansion
\displaystyle \frac{7}{210}
  • Terminating decimal expansion
  • Non -terminating decimal expansion
  • Cannot be determined
  • None
Prime factors of 140 are :
  • {2\times2\times 7}
  • {2\times2\times5}
  • {2\times2\times5\times7}
  • {2\times2\times5\times7\times3}
Euclids division lemma, the general equation can be represented as .......
  • a = b\times q + r
  • a = b\div q + r
  • a = b- q - r
  • a = b + q - r
The statement dividend = divisor \times quotient + remainder is called 
  • Euclid's multiplication Lemma
  • Euclid's addition Lemma
  • Euclid's subtraction Lemma
  • Euclid's division Lemma
(3 + \sqrt {5}) is .............. 
  • whole number
  • an integer
  • rational
  • irrational
2\times 2\times 2\times 3\times 3\times 13 = 2^{3} \times 3^{2} \times 13 is equal to
  • 1004
  • 828
  • 724
  • 936
Which option will have a terminating decimal expansion?
  • \dfrac {77}{210}
  • \dfrac {23}{30}
  • \dfrac {125}{441}
  • \dfrac {23}{8}
Fundamental theorem of arithmetic is also called as ______ Factorization Theorem.
  • Algebra
  • Ambiguous
  • Unique
  • None of these
We need blocks to build a building. In the same way _______ are the basic blocks to form all natural numbers.
  • prime numbers
  • real numbers
  • unique numbers
  • negative numbers
Using fundamental theorem of Arithmetic find L.C.M. and H.C.F of 816 and 170.
  • L.C.M. =4080 and H.C.F =34
  • L.C.M. =8160 and H.C.F =68
  • L.C.M. =2048 and H.C.F =62
  • L.C.M. =2040 and H.C.F =72
State whether the given statement is True or False :

2\sqrt { 3 }-1 is an irrational number.
  • True
  • False
State true or false
\sqrt{2} + \dfrac{1}{\sqrt{2}} is irrational.
  • True
  • False
Without actually dividing find which of the following are terminating decimals.
  • \dfrac{3}{25}
  • \dfrac{11}{18}
  • \dfrac{13}{20}
  • \dfrac{41}{42}
\sqrt { 7 } is a
  • an integer
  • an irrational number
  • a rational number
  • none of these
State True or False:
4\, - \,5\sqrt 2 is irrational if \sqrt 2 is irrational.
  • True
  • False
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